CN111493948A - Plugging system - Google Patents
Plugging system Download PDFInfo
- Publication number
- CN111493948A CN111493948A CN202010617426.7A CN202010617426A CN111493948A CN 111493948 A CN111493948 A CN 111493948A CN 202010617426 A CN202010617426 A CN 202010617426A CN 111493948 A CN111493948 A CN 111493948A
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- China
- Prior art keywords
- section
- pushing device
- connecting structure
- occluder
- guide wire
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00606—Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00623—Introducing or retrieving devices therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00632—Occluding a cavity, i.e. closing a blind opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00672—Locating means therefor, e.g. bleed back lumen
Abstract
The invention discloses a plugging system, comprising: the occluder comprises an occluder body and a connecting structure, wherein the occluder body is connected with the connecting structure; the pushing device is internally provided with a through inner cavity; the pushing device is detachably connected with the connecting structure; the guide piece penetrates through the inner cavity and is detachably connected with the connecting structure; the pushing device can move to a position where the pushing device can be connected with the connecting structure under the guidance of the guide piece when the pushing device is separated from the plugging piece. This patent adopts the pusher who is provided with the inner chamber that link up to and pass the inner chamber and the guide piece that is connected with the plugging device, when the laying position of plugging device or form have the difference, can remove to suitable position through guide piece guide pusher, pusher can reconnect with the plugging device, realizes the adjustment to plugging device position and state.
Description
Technical Field
The invention relates to the field of interventional therapy and occluders, in particular to an occlusion system.
Background
The occlusion device is an implant commonly used in interventional therapy, and can be used for preventing or treating various heart and brain diseases, such as congenital heart diseases like atrial septal defect and ventricular septal defect of a heart, left atrial appendage occlusion for preventing cerebral apoplexy, and the like. The occluder needs to be transported to the vicinity of an occlusion area in a sheath tube, then pushed to an implantation position by a pushing device and the shape of the occluder is adjusted, and after the occluder is installed, the installation state of the occluder is checked by means of radiography and the like. When the pushing device reaches the implantation position through a tortuous human body path, the main body of the pushing device is bent at one or more parts due to the fact that the main body conforms to the human body path, the farthest end of the pushing device can accumulate certain potential energy to generate certain pushing force or pulling force on an implantation instrument connected with the pushing device, the implantation instrument shape observed on medical imaging equipment by an operator is formed under the influence of external force of the pushing device, after the pushing device is separated, the pushing force or the pulling force is eliminated, the displacement or the deformation of the occluder can be caused, and once the occluder is found to be abnormally installed, the pushing device cannot be connected with the occluder again. In the prior art, when the shape of the occluder is abnormal, the shape of the occluder can be adjusted only through a thoracotomy, and the operation is complicated and the risk is very high. Therefore, whether a plugging system which can accurately reconnect the plugging device after the pushing device is detached exists is a technical problem which is expected to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a plugging system, which is provided with a guide piece for guiding a pushing device, can realize reconnection of the pushing device and a plugging device, realizes form adjustment of the plugging device, does not need a thoracotomy and reduces operation risks.
The technical scheme provided by the invention is as follows:
an occlusion system, comprising:
the occluder comprises an occluder body and a connecting structure, wherein the occluder body is connected with the connecting structure;
the pushing device is internally provided with a through inner cavity; the pushing device is detachably connected with the connecting structure;
the guide piece penetrates through the inner cavity and is detachably connected with the connecting structure;
when the pushing device is separated from the plugging piece, the pushing device can move to a position which can be connected with the connecting structure under the guidance of the guide piece.
According to the technical scheme, the guide piece penetrates through an inner cavity of the pushing device to be connected with a connecting structure of the plugging device, when the plugging device is installed, the plugging device is pushed to a target position by using the pushing device, after the plugging device is placed, the pushing device is detached first, and the guide piece is detached after the shape of the plugging device is detected. When the shape of the occluder is detected to be different, the guide piece is not detached, the pushing device is pushed again, the distal end of the pushing device is gradually moved to the position which can be connected with the connecting structure under the guide of the guide piece, the pushing device is connected with the occluder again and the position and the shape of the occluder are adjusted, after the adjustment is finished, the pushing device is detached again to detect the shape of the occluder, the steps are repeated until the shape detection result of the occluder is normal, then the guide piece is detached, and the operation is finished. The technical problem that the connecting structure of the occluder cannot be confirmed in the prior art, the shape and the orientation of the connecting structure of the occluder cannot be confirmed in the prior art, so that the pushing device cannot be installed any more is solved, when the occluder is abnormal in shape, a chest opening operation is not needed, the occluder can be directly reconnected through the pushing device to adjust the shape of the occluder, and the operation risk is reduced.
Further preferably, a connecting hole is formed in the connecting structure, the connecting hole comprises a first section and a second section which are connected, and the first section is close to the pushing device; the radial size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide member includes an airway tube and a balloon connected, wherein,
when the air bag is expanded, the size of the air bag is larger than the radial size of the first section and is abutted against the step surface.
When the pushing device needs to be reassembled, the air bag is kept in an expansion state, the air guide tube is pulled, the air bag abuts against the step surface and cannot be separated, and the pushing device is sent back under the guide of the air guide tube. When the shape of the occluder is found to be good through detection, the air pressure in the air bag can be removed through the air duct, the air bag can pass through the first section after being reduced, and the air duct and the air bag can be withdrawn by pulling the air duct from the near end. The air bag can not generate force action on the stopper basically in the process of shrinking and separating from the first section, the influence on the shape of the stopper in the process of separating the guide piece is avoided, and the success rate of the operation is effectively improved.
Further preferably, the connecting structure is provided with a connecting hole, the connecting hole comprises a first section and a second section which are connected, the first section is close to the pushing device, and the radial size of the second section is smaller than that of the first section;
the guide piece is a bendable conduit, and one end of the guide piece is fixed with the second section through a thread structure.
One end of the conduit is provided with external threads, the second section is internally provided with internal threads correspondingly, the conduit has certain rigidity, and the conduit can be fixed with or separated from the second section by rotating the conduit. In the process of pushing the occluder, the catheter and the second section are always kept fixed until the shape of the occluder is detected to be in a proper state, the catheter is rotated at the near end to separate the catheter from the second section and disengage from the first section, and then the catheter can be pulled out from the near end. Because the catheter only needs to play a guiding role, the catheter and the second section can be fixed through a thread structure with small friction force, so that the influence on the shape of the occluder in the process of detaching the catheter is reduced, and the success rate of the operation is effectively improved.
Further preferably, a connecting hole is formed in the connecting structure, the connecting hole comprises a first section and a second section which are connected, and the first section is close to the pushing device; the size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide piece comprises a guide wire and an elastic positioning piece, one end of the guide wire is connected with the elastic positioning piece, the radial size of at least one position of the elastic positioning piece is larger than that of the first section so as to be abutted against the step surface, and the elastic positioning piece has a stress threshold value; wherein the content of the first and second substances,
when the stress of the elastic positioning piece is larger than the threshold value, the elastic positioning piece deforms and is separated from the connecting mechanism.
This technical scheme, the seal wire can adopt the high medical seal wire of security, the seal wire passes pusher's cavity, the first section and the second section of connecting hole in proper order to be connected with the elastic positioning piece that is located the second section, pusher is kept away from to the second section, and its internal diameter is greater than the first section, consequently can form the step face towards the plugging device direction between second section and the first section, at least one department radial dimension is greater than the elastic positioning piece of first section and supports and lean on the step face, can play the effect that hinders it to keep away from the plugging device to the seal wire. The elastic positioning piece can deform to a certain extent after being stressed, and the larger the stress is, the larger the deformation amplitude is. In the operation process, dismantle or the in-process of reconnecting pusher, the slight atress that the seal wire received can not lead to elastic positioning element to deviate from first section, and after the shape of confirming the plugging device is normal, use great power pulling seal wire, elastic positioning element can take place great deformation, deviates from in first section, is convenient for retrieve the guide, the simple operation.
Further preferably, the first section is provided with an internal thread and the distal end of the pushing device is correspondingly provided with an external thread to be connected with the first section.
When the pushing device needs to be remounted, the pushing device is pushed in along the guide of the guide wire, so that the far end of the pushing device is gradually close to the connecting structure, and the guide wire extends into the connecting hole and sequentially passes through the first section and the second section, so that the far end of the pushing device is gradually close to the outer side of the first section of the connecting hole along the guide wire. Pusher and connecting hole pass through the helicitic texture and are connected, and the operation in-process, with pusher propelling movement to the department of contradicting with connection structure, internal thread and external screw thread contact promptly, rotating pusher, pusher and connection structure can be connected under helicitic texture's effect, and the simple operation of reconnection can effectively reduce the operation time.
Further preferably, the connecting structure comprises a connecting structure body and a pin, the pushing device, the connecting structure body and the stopper body are connected, and the pin is connected with the connecting structure body; the connecting structure body is provided with a connecting hole, the connecting hole is provided with an internal thread, the pushing device is correspondingly provided with an external thread to be connected with the connecting hole, and the pin is located in the connecting hole.
The pin is arranged in the connecting hole, the guide wire can guide the near end of the pushing device to be close to the connecting hole, and the threaded structure is arranged to facilitate reconnection of the pushing device and the connecting hole. After the guide piece is disassembled, the pin and the occluder body are retained in the human organ for a long time, and the pin is arranged in the connecting structure body, so that the pin is arranged outside the connecting structure, the human tissue can be prevented from being scratched by the pin, the endothelialization process of the occluder can be accelerated, and a patient can recover normal life as soon as possible.
The guiding piece is a guide wire, the guide wire comprises a first end and a second end, and the guide wire is wound on the pin, so that the first end and the second end are both located at the position, far away from the near end of the connecting structure, of the pushing device, and the first end and the second end of the guide wire and the near end of the pushing device are located outside a human body.
According to the technical scheme, the guide wire is wound on the pin, and when the first end and the second end of the guide wire are pulled simultaneously, the guide wire can be blocked by the pin. When the plugging device is installed, the first end and the second end of the guide wire are pulled to operate. When the guide wire needs to be detached, the other end of the guide wire can enter a human body and penetrate through the pin to finally be pulled out of the human body only by pulling the first end or the second end, the installation mode is simple, the operation time is effectively shortened, the guide piece needing to be detached is only one guide wire, and the guide piece can not scratch organs or blood vessels in the process of exiting the human body, so that the safety is high; or the first end and the second end of the guide wire are fastened at the proximal end of the pushing device in a length-adjustable manner, and when the proximal end of the pushing device is operated, the first end and the second end of the guide wire cannot be loosened. When the guide wire is detached, the guide wire can be cut or fused, and then the guide wire is pulled out of the human body.
Further preferably, the connecting structure body is provided with a through connecting hole, the connecting hole is provided with an internal thread, the far end of the pushing device is correspondingly provided with an external thread to be connected with the connecting hole,
it is further preferred that the first and second liquid crystal compositions,
specifically, a connecting hole is formed in the connecting structure and comprises a first section and a second section which are connected, wherein the first section is close to the pushing device; the size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide piece comprises a first guide wire, a first fixing structure, a second guide wire and a second fixing structure, the first guide wire is connected with the first fixing mechanism, the second guide wire is connected with the second fixing mechanism, and the radial sizes of the first fixing mechanism and the second fixing mechanism are smaller than that of the first section;
the radial dimension of the first fixing mechanism and the second fixing mechanism after being spliced is larger than that of the first section so as to be clamped on the step surface.
Further preferably, the first fixing structure is a metal ball; the second fixing structure is an elastic metal sheet, and when the guide piece is disassembled, the first guide wire is pulled to pull the first fixing mechanism out of the human body, and then the second guide wire is pulled to pull the second fixing mechanism out of the human body.
The invention has the technical effects that:
the patent creatively sets up the guide piece of connecting with the connection structure detachable connection of plugging device, and has set up a cavity that link up in the pusher correspondingly, supplies the guide piece to pass the cavity and is connected with the plugging device. After dismantling pusher, if the form or the position of discovery plugging device are unusual, promote pusher to the distal end again, pusher can be close to the connection structure of plugging device again under the guide of guide piece, thereby realize the reconnection of pusher and plugging device and the relocation of plugging device, after the plugging device installation is successful, the guide piece can be dismantled smoothly, can not remain and produce harmful effects in the human body, the security of operation and the convenience of operation have been improved, among the prior art has been solved, only can be through the technical problem of the operation adjustment plugging device form of opening the chest when the inspection discovery plugging device installation is unusual.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is an exploded view of a plugging system according to an embodiment of the present invention;
FIG. 2 is a schematic view of the device of one embodiment of the present invention, shown uninflated;
FIG. 3 is a schematic view of the device of one embodiment of the present invention as the balloon is inflated;
FIG. 4 is a schematic diagram of the device of an embodiment of the present invention in which the airway tube guides movement of the pusher device;
FIG. 5 is a schematic view of the device of one embodiment of the present invention with the catheter and connection structure unsecured;
FIG. 6 is a schematic view of a catheter configuration according to an embodiment of the present invention;
FIG. 7 is a schematic view of the device in accordance with one embodiment of the present invention, with the catheter secured to the connecting structure;
FIG. 8 is a schematic structural diagram of a pushing device and a connecting structure when the pushing device and the connecting structure are fixed according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a catheter for guiding movement of a pusher device according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a pushing device and a connection structure according to an embodiment of the present invention;
FIG. 11 is a schematic view of an elastic positioning element according to an embodiment of the present invention;
FIG. 12 is a cross-sectional view of a pinned connection and pusher apparatus of an embodiment of the invention;
FIG. 13 is a cross-sectional view of a connecting structure of a connecting guidewire according to an embodiment of the invention;
FIG. 14 is a cross-sectional view of a coupling structure for coupling a first fixation structure to a second fixation structure in accordance with an embodiment of the present invention;
FIG. 15 is an inside cross-sectional view of a connecting structure during the pulling of a first guidewire alone, in accordance with an embodiment of the present invention;
figure 16 is a diagrammatic view of an occlusion system during an occlusion procedure in accordance with an embodiment of the present invention.
The reference numbers illustrate:
1-a stopper; 11-the occluder body; 12-a linking structure; 121-connecting hole; 1211-first paragraph; 1212-a second section; 1213-step surface; 122-a connecting structure body; 123-a pin; 2-a pushing device; 21-lumen; 22-a proximal end; 23-a distal end; 3-a guide; 31-a guide wire; 311-a first guide wire; 312-a second guidewire; 313-a first end; 314-second end; 32-a first fixation structure; 33-a second fixation structure; 34-an elastic positioning member; 35-an airway tube; 36-an air bag; 37-a catheter; 371-connecting the knot; 372-a bump; 373-a groove; 4-sheath tube.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
As a specific example, as shown in fig. 1-3, an occlusion system comprising: the occluder 1 comprises an occluder body 11 and a connecting structure 12, wherein the occluder body 11 and the connecting structure 12 can be connected in a welding mode, a screw fixing mode and the like, and can not fall off after being used in a human body for a long time, the connecting structure 12 is arranged in the middle of the bottom of one side of the occluder 1, and in actual production, the connecting structure 12 can adjust the position and the form of the connecting structure 12 according to the conditions of the occluder 1, the use environment and the like; the pushing device 2 is internally provided with a through inner cavity 21, the pushing device 2 is detachably connected with the connecting structure 12 and used for pushing the occluder 1, the pushing device 2 adopts a hollow tube, two openings of the hollow tube are respectively positioned at two ends of the hollow tube, the pushing device 2 is tubular and can move along the inner wall of a blood vessel, the danger of scratching the blood vessel is not easy to occur, in the actual production, the pushing device 2 can be adjusted according to a target organ for releasing the occluder 1, a releasing mode and the type of the occluder 1, and the adjusted scheme is within the protection range of the patent; the guiding piece 3 passes through the inner cavity 21 and is detachably connected with the connecting structure 12, when the pushing device 2 is detached and the shape or the position of the plugging device 1 needs to be adjusted through inspection, the guiding piece 3 can be used for guiding the pushing device 2 to move to a position near the connecting structure 12 and capable of being connected with the connecting structure 12, the pushing device 2 is connected again, and the plugging device 1 is adjusted through the pushing device 2, so that the plugging device 1 is kept in a proper shape. The connecting structure 12 in this patent can be any structure that can connect and adjust the shape and position of the occluder 1 on the occluder 1.
So far, it can be understood by those skilled in the art that the key point of the present patent is that the guiding element 3 is provided, and when the position or the form of the occluder 1 is found to be different, the pushing device 2 is guided by the guiding element 3 to move to a proper position, so that the pushing device 2 can complete reconnection with the occluder 1 in the human body. When performing an operation, as shown in fig. 16, firstly, the whole occlusion system is arranged in the sheath 4, the sheath 4 is pushed at the proximal end to make the distal end of the sheath 4 close to the position to be occluded, and then the occluder 1 is pushed out of the sheath 4 by the pushing device 2, and the position and the shape of the occluder 1 are adjusted to a proper state to make the occluder 1 work normally; then, the end part of the pushing device 2 is separated from the connecting structure 12 of the plugging device 1, the shape and the position of the plugging device 1 are detected, if the shape of the plugging device 1 is found to be good, the guide piece 3 is separated from the connecting structure 12 of the plugging device 1, the pushing device 2 and the guide piece 3 are taken out of the body, and the plugging device 1 is completely installed; when the form abnormality of the occluder 1 is detected, the push-in device 2 is pushed in again before the guide 3 is removed. Because the guiding member 3 passes through the cavity inside the pushing device 2, the pushing device 2 approaches the connection part of the guiding member 3 and the connecting structure 12 under the guiding of the guiding member 3 in the process of re-entering the human body, when the pushing device 2 enters deep enough depth, the end part of the pushing device 2 abuts against the connecting structure 12, at this time, the pushing device 2 and the connecting structure 12 can be reconnected by selectively applying pressure, rotating and the like according to the connection type of the pushing device 2 and the connecting structure 12, and after reconnection is completed, the position or the form of the occluder 1 can be adjusted by the pushing device 2. After that, the above steps are repeated until the position and the shape of the occluder 1 are detected to be good, the guide 3 is detached, and the guide 3 and the pusher 2 are taken out of the body, thereby completing the installation of the occluder 1.
When the occluder 1 belongs to the type which can be automatically unfolded after the sheath tube 4 is pushed out, in the releasing process, the pushing device 2 only needs to play the role of pushing the occluder 1 in a short distance, and in the recycling process, the pushing device 2 is used for pulling the occluder back into the sheath tube 4 and releasing the occluder again. When the occluder 1 is in a type of which the shape can not be automatically expanded, a device for adjusting the shape of the occluder 1 can be arranged or integrated on the pushing device 2, and in the releasing process, the pushing device 2 not only plays a role of pushing the occluder 1 in a short distance, but also has a role of adjusting the shape of the occluder 1; in the recovery process, after the pushing device 2 is reconnected with the plugging device 1, the plugging device 1 can be pulled back to be released again, and the shape of the plugging device 1 can also be directly adjusted.
In a preferred embodiment, as shown in fig. 2-4, the connecting structure 12 is provided with a connecting hole 121, the connecting hole 121 includes a first section 1211 and a second section 1212 connected with each other, wherein the first section 1211 is close to the pushing device 2; the second section 1212 is larger than the first section 1211, and a step surface 1213 is formed at the connection part of the first section 1211 and the second section 1212; the guide 3 comprises an airway tube 35 and a balloon 36 connected, the distal end of the airway tube 35 and the balloon 36 extending into the connection hole 121, and the balloon 36 being located within the second section 1212, wherein when the balloon 36 is inflated, the balloon 36 is of a size larger than the first section 1211 and abuts against the step surface 1213. In practice, the air bag 36 is inflated before the occluder 1 is released and the pushing device 2 starts to be detached for the first time, so that the air bag 36 abuts against the step surface 1213 and the air duct 35 cannot drive the air bag 36 to come out of the first section 1211. When the pushing device 2 is separated from the occluder 1 and the operator detects that the position or the shape of the occluder 1 is different, a certain pulling force is applied to the airway tube 35 from the outside of the body, so that the airway tube 35 is tensioned, and then the pushing device 2 is pushed, so that the pushing device 2 moves to be close to the first section 1211 under the guidance of the airway tube 35, and the resetting and guiding functions of the guide piece 3 to the pushing device 2 are realized. After a series of adjustments of the position of the occluder 1, when the shape and the position of the occluder 1 are detected to be good, the air pressure in the air bag 36 is removed through the air duct 35, so that the volume of the air bag 36 is reduced, then the air duct 35 is pulled, the air duct 35 drives the air bag 36 to be separated from the first section 1211 and separated from the occluder 1, the air duct 35 is continuously pulled, the air duct 35 and the air bag 36 are separated from the human body, and then the release of the occluder 1 can be completed.
In a preferred embodiment, as shown in FIGS. 5-9, the radial dimension of the second section 1212 is smaller than the radial dimension of the first section 1211, unlike the previous embodiments. The guide member 3 is a bendable guide tube 37, the distal end of the guide tube 37 has an external thread, the second section 1212 is correspondingly provided with an internal thread, and the guide tube 37 enters the connecting hole 121, passes through the first section 1211 and is fixed with the second section 1212 through a thread structure. The catheter 37 is kept fixed to the second section 1212 during assembly of the occlusion system and before release of the occluding device 1 is completed. When detecting that the position and the shape of the plugging device 1 are different, pushing the pushing device 2, wherein the pushing device 2 moves to the connecting structure 12 under the action of the guide part 3. The conduit 37 has a certain rigidity, and the conduit 37 can be rotated integrally with the conduit 37 by rotating the conduit 37, and when the form and position of the occluder 1 are detected to be good, the conduit 37 is rotated to separate from the second segment 1212. In this embodiment, the conduit 37 is formed by connecting a plurality of connecting knots 371, a plurality of protrusions 372 are arranged on both sides of each connecting knot 371, a neck portion with a reduced size is arranged at the tail portion of each protrusion 372, a groove 373 matched with the protrusion 372 is formed between two adjacent protrusions 372, the protrusion 372 and the groove 373 between two adjacent connecting knots 371 cooperate with each other to play a connecting role, and the size of the groove 373 is larger than that of the protrusion 372, so that each adjacent connecting knot 371 can rotate at a certain angle. In practice, the conduit 37 with other structure can be used as long as the conduit 37 is simultaneously bendable and rigid so that the whole can rotate synchronously.
In a preferred embodiment, as shown in fig. 10 and 11, the connecting structure 12 is provided with a connecting hole 121, the connecting hole 121 includes a first section 1211 and a second section 1212, the first section 1211 is disposed close to the pushing device 2 and is provided as a threaded hole, the second section 1212 is disposed close to the stopper 1 and is provided as a circular hole, the second section 1212 has a size larger than that of the first section 1211 and forms a step surface 1213 with the first section 1211, and the step surface 1213 faces the stopper body 11; the guide part 3 comprises a guide wire 31 and an elastic positioning part 34, the guide wire 31 adopts a medical guide wire 31 harmless to the human body, passes through the pushing device 2, the first section 1211 and enters the second section 1212, the end part of the elastic positioning piece is connected with an elastic positioning piece 34, the elastic positioning piece 34 is formed by winding elastic memory alloy, at least one of the radial dimension of the elastic positioning element 34 is larger than that of the first section 1211, the elastic positioning element 34 abuts against the step surface 1213 in an unstressed state and cannot be separated from the first section 1211, the side of the second section 1212 far away from the first section 1211 is used for welding and fixing with the occluder body 11, therefore, the elastic positioning element 34 cannot be separated from the second section 1212, during the process of pushing the stopper 1 by the pushing device 2 or reconnecting the pushing device 2 with the connecting structure 12, the elastic positioning member 34 receives a smaller force from the guide wire 31, and is deformed to a smaller extent, and therefore, still abuts against the step surface 1213 and cannot be removed from the first section 1211; when the guide member 3 needs to be detached, the guide wire 31 is pulled by a large force, the elastic positioning member 34 is greatly deformed and is pulled out from the first section 1211, so that the guide member is detached from the connecting structure 12, and the guide member 3 has a simple structure, is convenient to process, is convenient to operate, and is beneficial to shortening the operation time. In actual production, the connecting hole 121 may also adopt a blind hole opened toward the pushing device 2, the angle of the step surface 1213, the shape and material of the elastic positioning element 34, and the specific shape of the connecting hole 121 may be adjusted to some extent according to actual needs, and the adjusted schemes all belong to the protection scope of this patent.
In a preferred embodiment, as shown in fig. 10 and 11, the first section 1211 is provided with an internal thread, one end of the pushing device 2 is correspondingly provided with an external thread, the pushing device 2 and the connecting structure 12 are connected through a thread structure, and the pushing device 2 can be detached by rotating the pushing device 2, so that the shape of the occluder 1 is less influenced during detachment of the pushing device 2, and the shape of the occluder 1 at the position of human tissues is favorably maintained. When the pushing device 2 needs to be reconnected, the pushing device 2 is pushed along the guide wire 31, and when the pushing device 2 contacts the connecting structure 12, the external thread of the pushing device 2 and the internal thread of the first section 1211 will contact each other, and at this time, there is a high probability that the external thread will be screwed into the internal thread by rotating the pushing device 2. The outer end of the first section 1211 can be provided with a chamfer, so that the external thread can be screwed into the internal thread more easily, the operation is convenient, and the operation efficiency is improved.
In a preferred embodiment, as shown in fig. 12 and 13, the connecting structure 12 comprises a connecting structure body 122 and a pin 123, the pushing device 2 is connected with the connecting structure body 122 and the stopper body 11 in turn, and the pin 123 is connected with the stopper body 11. One end of the pushing device 2 close to the occluder 1 is a far end 23, the far end 23 extends into a human body, one end of the pushing device 2 far away from the occluder 1 is a near end 22, the near end 22 is located outside the human body, and medical staff control pushing and rotating actions of the pushing device 2 through the near end 22. The guide member 3 is a guide wire 31 and includes a first end 313 and a second end 314, the guide wire 31 is wound around the pin 123 to form a nearly U-shape, and the first end 313 and the second end 314 of the guide wire 31 both extend from the distal end 23 of the pushing device 2. During the pushing of the occluding device 1 by the pushing device 2 and the manipulation of the pushing device 2 to reconnect the occluding device 1, the first end 313 and the second end 314 are simultaneously pulled, and the U-shaped bottom of the guide wire 31 is hung on the pin 123 to connect with the pin 123. After the occluder 1 is installed, one end is loosened, only the first end 313 or the second end 314 is pulled, the other end enters the human body and passes through the pin 123 to completely exit the human body, and in the process of detaching the guide wire 31, the connecting structure 12 is basically not stressed, so that the detachment action of the guide part 3 has little influence on the shape of the occluder 1, and the success rate of the operation is effectively improved.
In a preferred embodiment, as shown in fig. 12 and 13, the connecting structure body 122 is provided with a connecting hole 121, a side of the connecting hole 121 close to the distal end 23 of the pushing device 2 is provided with an external thread, and the distal end 23 is connected with the connecting structure body 122 through a thread structure. The end of the connecting hole 121 far away from the pushing device 2 is provided with a pin 123, and the guide wire 31 sequentially passes through the inner cavity 21 of the pushing device 2 and the external thread of the connecting hole 121, then bypasses the pin 123, and sequentially passes through the external thread of the connecting hole 121 and the inner cavity 21 of the pushing device 2 to extend towards the outer side of the proximal end 22 of the pushing device 2. The pin 123 is arranged at the inner part of the connecting hole 121 provided with the external thread, when the pushing device 2 and the occluder 1 need to be reconnected, the pushing device 2 can be accurately close to the external thread of the connecting hole 121 under the guidance of the guide wire 31, the reconnection success rate of the pushing device 2 and the occluder 1 is effectively improved, and the operation time is shortened. Furthermore, the pin 123 is arranged in the connecting hole 121, and compared with the pin 123 arranged on the outer wall of the connecting structure 12, the pin 123 can scratch the tissue of the patient during the movement of the occluder 1; meanwhile, the plugging device body 11 and the connecting structure 12 can not contact the human body at the periphery of the connecting structure 12, so that endothelialization can be more quickly carried out on the plugging device body 11 and the connecting structure 12, and the recovery period of a patient is shortened.
In a preferred embodiment, as shown in fig. 14 and 15, the guide 3 comprises, in contrast to the previous embodiments, a first guide wire 311 and a first fixing structure 32 connected to each other and a second guide wire 312 and a second fixing structure 33 connected to each other. Connecting hole 121 includes internal thread and cavity section, is provided with the first fixed knot structure 32 and the second fixed knot structure 33 of looks adaptation in the cavity section, and wherein, first fixed knot structure 32 is a metal ball, and second fixed knot structure 33 is a sheetmetal, has seted up a breach that is used for leaning on the metal ball on it, and the breach is not shown in the figure, and first fixed knot structure 32 and second fixed knot structure 33's size all is less than the internal thread, all can take out from the internal thread alone promptly. When a pulling force is applied to the first guide wire 311 and the second guide wire 312 together, the first fixing structure 32 and the second fixing structure 33 abut against each other and cannot be pulled out from the internal thread, but when the pulling force is applied to the first guide wire 311 and the second guide wire 312 alone, because the first fixing structure 32 is a metal ball, the size is small and the weight is concentrated, the first fixing structure 32 pushes the second fixing structure 33 away and is pulled out from the internal thread when being stressed alone, and when the first fixing structure 32 is pulled out of the connecting structure 12 again and the pulling force is applied to the second guide wire 312 again, the second fixing structure 33 loses the blocking of the first fixing structure 32 and can be pulled out from the internal thread under the pulling force of the second guide wire 312. When the plugging device 1 is pushed by using the pushing device 2 or the pushing device 2 and the plugging device 1 need to be reconnected, a pulling force is applied to the first guide wire 311 and the second guide wire 312 at the same time, and at this time, the first fixing structure 32 and the second fixing structure 33 cannot be separated from the connecting structure 12; after the good installation state of the occluder 1 is confirmed, the first guide wire 311 and the second guide wire 312 are pulled in sequence, so that the first fixing structure 32 and the second fixing structure 33 can be separated from the connecting structure 12. The first fixing structure 32, the second fixing structure 33 and the connecting structure 12 may adopt other matching manners, the first fixing structure 32 and the second fixing structure 33 may also be interchanged, and those skilled in the art that adopt other types of first fixing structures 32, second fixing structures 33 or connecting structures 12 all belong to the protection scope of the present patent.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered as protection of the present invention.
Claims (9)
1. An occlusion system, comprising:
the occluder comprises an occluder body and a connecting structure, wherein the occluder body is connected with the connecting structure;
the pushing device is internally provided with a through inner cavity; the pushing device is detachably connected with the connecting structure;
the guide piece penetrates through the inner cavity and is detachably connected with the connecting structure;
when the pushing device is separated from the plugging piece, the pushing device can move to a position which can be connected with the connecting structure under the guidance of the guide piece.
2. The occlusion system of claim 1, wherein:
the connecting structure is provided with a connecting hole, the connecting hole comprises a first section and a second section which are connected, and the first section is close to the pushing device; the radial size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide member includes an airway tube and a balloon connected, wherein,
when the air bag is expanded, the size of the air bag is larger than the radial size of the first section and is abutted against the step surface.
3. The occlusion system of claim 1, wherein:
the connecting structure is provided with a connecting hole, the connecting hole comprises a first section and a second section which are connected, the first section is close to the pushing device, and the radial size of the second section is smaller than that of the first section;
the guide piece is a bendable conduit, and one end of the conduit is fixed with the second section through a thread structure.
4. The occlusion system of claim 1, wherein:
the connecting structure is provided with a connecting hole, the connecting hole comprises a first section and a second section which are connected, and the first section is close to the pushing device; the size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide piece comprises a guide wire and an elastic positioning piece, one end of the guide wire is connected with the elastic positioning piece, the radial size of at least one position of the elastic positioning piece is larger than that of the first section so as to be abutted against the step surface, and the elastic positioning piece has a stress threshold value; wherein the content of the first and second substances,
when the stress of the elastic positioning piece is larger than the threshold value, the elastic positioning piece deforms and is separated from the connecting mechanism.
5. The occlusion system of claim 4, wherein:
the first section is provided with an internal thread, and one end of the pushing device is correspondingly provided with an external thread so as to be connected with the first section.
6. The occlusion system of claim 1, wherein:
the connecting structure comprises a connecting structure body and a pin, the pushing device, the connecting structure body and the occluder body are connected, and the pin is connected with the connecting structure body;
the guide piece is a guide wire, the guide wire comprises a first end and a second end, and the guide wire is wound around the pin, so that the first end and the second end are both located at one end, far away from the connecting structure, of the pushing device.
7. The occlusion system of claim 6, wherein:
the connecting structure body is provided with a connecting hole, the connecting hole is provided with an internal thread, the far end of the pushing device is correspondingly provided with an external thread to be connected with the connecting hole,
the pin is positioned in the connecting hole.
8. The occlusion system of claim 1, wherein:
the connecting structure is provided with a connecting hole, the connecting hole comprises a first section and a second section which are connected, and the first section is close to the pushing device; the size of the second section is larger than that of the first section, and a step surface is formed at the joint of the first section and the second section;
the guide piece comprises a first guide wire, a first fixing structure, a second guide wire and a second fixing structure, the first guide wire is connected with the first fixing mechanism, the second guide wire is connected with the second fixing mechanism, and the radial sizes of the first fixing mechanism and the second fixing mechanism are smaller than that of the first section;
the radial dimension of the first fixing mechanism and the second fixing mechanism after being spliced is larger than that of the first section so as to be clamped on the step surface.
9. The occlusion system of claim 8, wherein:
the first fixing structure is a metal ball; the second fixing structure is a metal sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010617426.7A CN111493948B (en) | 2020-07-01 | 2020-07-01 | Plugging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010617426.7A CN111493948B (en) | 2020-07-01 | 2020-07-01 | Plugging system |
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| CN111493948A true CN111493948A (en) | 2020-08-07 |
| CN111493948B CN111493948B (en) | 2020-11-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112401947A (en) * | 2020-11-24 | 2021-02-26 | 李建朝 | Spherical ball structure plugging device for extracardiac operation and use method thereof |
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| CN2626433Y (en) * | 2003-05-21 | 2004-07-21 | 卢才义 | Congenital heart disease plugging device with safe release device |
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|---|---|
| CN111493948B (en) | 2020-11-03 |
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